<!DOCTYPE html>
<html>
<head>
	<title>Leaflet debug page</title>

	<link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" integrity="sha512-07I2e+7D8p6he1SIM+1twR5TIrhUQn9+I6yjqD53JQjFiMf8EtC93ty0/5vJTZGF8aAocvHYNEDJajGdNx1IsQ==" crossorigin="" />
	<script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet-src.js" integrity="sha512-WXoSHqw/t26DszhdMhOXOkI7qCiv5QWXhH9R7CgvgZMHz1ImlkVQ3uNsiQKu5wwbbxtPzFXd1hK4tzno2VqhpA==" crossorigin=""></script>
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link rel="stylesheet" href="screen.css" />
	
	<link rel="stylesheet" href="../dist/MarkerCluster.css" />
	<script src="../dist/leaflet.markercluster-src.js"></script>

	<style>
		.mycluster {
			width: 40px;
			height: 40px;
			background-color: greenyellow;
			text-align: center;
			font-size: 24px;
		}

	</style>
</head>
<body>

	<div id="map"></div>

	<script type="text/javascript">

		var tiles = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
				maxZoom: 18,
				attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
			}),
			latlng = L.latLng(50.5, 30.51);

		var map = L.map('map', {center: latlng, zoom: 15, layers: [tiles]});


		//Custom radius and icon create function
		var markers = L.markerClusterGroup({
			maxClusterRadius: 120,
			iconCreateFunction: function (cluster) {
				var markers = cluster.getAllChildMarkers();
				var n = 0;
				for (var i = 0; i < markers.length; i++) {
					n += markers[i].number;
				}
				return L.divIcon({ html: n, className: 'mycluster', iconSize: L.point(40, 40) });
			},
			//Disable all of the defaults:
			spiderfyOnMaxZoom: false, showCoverageOnHover: false, zoomToBoundsOnClick: false
		});


		function populate() {
			for (var i = 0; i < 100; i++) {
				var m = L.marker(getRandomLatLng(map), { title: i });
				m.number = i;
				markers.addLayer(m);
			}
			return false;
		}
		function populateRandomVector() {
			for (var i = 0, latlngs = [], len = 20; i < len; i++) {
				latlngs.push(getRandomLatLng(map));
			}
			var path = L.polyline(latlngs);
			map.addLayer(path);
		}
		function getRandomLatLng(map) {
			var bounds = map.getBounds(),
				southWest = bounds.getSouthWest(),
				northEast = bounds.getNorthEast(),
				lngSpan = northEast.lng - southWest.lng,
				latSpan = northEast.lat - southWest.lat;

			return L.latLng(
					southWest.lat + latSpan * Math.random(),
					southWest.lng + lngSpan * Math.random());
		}

		populate();
		map.addLayer(markers);



		var shownLayer, polygon;

		function removePolygon() {
			if (shownLayer) {
				shownLayer.setOpacity(1);
				shownLayer = null;
			}
			if (polygon) {
				map.removeLayer(polygon);
				polygon = null;
			}
		};

		markers.on('clustermouseover', function (a) {
			removePolygon();

			a.layer.setOpacity(0.2);
			shownLayer = a.layer;
			polygon = L.polygon(a.layer.getConvexHull());
			map.addLayer(polygon);
		});
		markers.on('clustermouseout', removePolygon);
		map.on('zoomend', removePolygon);

	</script>
</body>
</html>
